but it just so happened, at the end of the year, taxes seemed to go bp's way. instead of a tax rate of around 336% to 38%, they were paying about 16% and that actually is nearly all the difference. so that is not something which unfortunately we would expect something to happen on a quarterly basis. so take the money now. it's good news, but not something that you build into 2013. >> so why is the stock up to 32%? clearly that's not an operational thing. >> you're getting a little bit of melt yumm coming back in the gulf of mexico. overall volumes were down 7% year on year. if you take out the divestment, take out psas, they were down less than 1%. if you look at the u.s. liquids production, which is a real guide because it's seasonal, that was up around 45,000 barrels a day. so you've had two big fields which started at the end of the third quarter, which had been up and running for the fourth quarter. we're starting to see those come through in the fourth quarter. that's a tick in the box of what they said they were going to be doing. >> yeah. seymour pierce